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Finding the Fourth Proportional to 398,191.56, 549,504.36 and 219,343.56

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Solution

The fourth proportional to 398,191.56, 549,504.36 and 219,343.56 is: 302,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,191.56 : 549,504.36 = 219,343.56 : x
  2. Step 2: Convert to fraction form
    398,191.56/549,504.36 = 219,343.56/x
  3. Step 3: Cross multiply
    398,191.56x = 549,504.36 × 219,343.56
  4. Step 4: Simplify right side
    398,191.56x = 120,530,242,557.92
  5. Step 5: Solve for x
    x = 120,530,242,557.92/398,191.56
  6. Step 6: Final answer
    x = 302,694.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.